Molder s flask



(No Model.)

H. R. TRAVERS I8f, C. PETERSEN. MOLDBRS'PLASK.

INVEN'I' DRS- Patented Feb. 6, 1894.

.CLM f WITNEEEE:

UNITED STATES ATENT OFFICE.

HERMAN R. TRAVERS AND CHRISTIAN PETERSEN, OF BALTIMORE, ASSIGN- ORS TO JOHN E. NORWOOD, OF SYKESVILLE, MARYLAND.

NIOLDERS FLASK.

SPECIFICATION forming part of Letters Patent No. 514,101, dated February 6, 1 894. Application filed December 20, 1892. Serial No. 455,849. (No model.)

To all whom it may concern.-

Be it known that we, HERMAN R. TRAVERS and CHRISTIAN PETEESEN, citizens of the United States, residing at Baltimore city, in

the State of Maryland, have invented certain new and useful Improvements in Molder's Flasks, of which the following is a specificaion.

This invention relates to an improvement o in molders flasks and the object is to provide a ask with corner fastenings or clamps whereby it may be spread while the opposite sides remain parallel with each other.

In the accompanying drawings which illus- 5 trate a construction for carrying out our invention, Figure 1 shows a top-view of the liask closed, broken lines indicating its open state.

Fig. 2 shows a central cross-section taken on line 2-2 of Fig. 1. Fig. 3 shows a face-view :o of the corner-fastenings or clamps at one corner. Figs. 4 and 5, show side or edge views of the two sliding parts of a clamp, and a detail of the clamp-cam.

The upper and lower halves ofthe flask each 5 comprise two parts, A, A', and B, B', and each of such parts consists of two sides of the fiask fastened together at right angles to each other, the corner thus formed being bound by a metal corner-piece, a. The two parts of a flask-half tit together and form a rectangie, and the two diametrically opposite corners where they abut are cut 0E to form surfaces, b, for the fastenings or clamps to t against, one of such clamps being at each of` these separable corners of the liask.

Each clamp consists of the following parts: A plate, C, tits against the corner surface, b, and has an angle liange, c, tting against the side of the part, A', of the iiask, and secured thereto. A lug, d, formed on the plate, O, projects at right angles therefrom and is bifurcated or slotted, as shown. The side-arms, e, are formed integral with plate, C, one on either side of the bifurcated lug, d, being joined to said plate at the point of the angle formed between the plate, and the anglelange, c. Said arms extend up from plate, C, a short distance and then parallelwith it, to a length preferably about equal to that of ;o the plate, C. A plate, C', co-operating with plate, C, has 'a side flange, c', by means of which it is secured to the part, A, of the liask.

A central longitudinal slot, g, divides the plate, C', into two parts or members. In use these fit and slide one on either side of the lug, d, and each one partly under one ofthe side arms, e. Two ears, h, are secured to the respective members of the plate, C', one on either side of the slotted lug, d, and project out between said lug and one ofthe side- 6o A bearing in direction transverse to the side arms, e, is formed in each of the said ears, h, on the side thereof adjacent the lug, d. Two stop-lugs, j, are located on the plate, C', so that one confronts the end of 65 each of the side-arms, e. Set-screws, j', pass respectively, one through each of the said stop-ears, and the side-arms, e, abut at their ends against said set-screws whereby the in` clination of the flask part, A, with respect to 7o the part, A', may be adjusted, and in case the flask is of the two-part variety the said twoparts may be made to t eachother closely,

as it will be evident, by reference to the drawings, that the corners secured by the fastenings, a, may be raised or lowered with respect to the other corners by adjusting the setscrews,j. A handle has two trunnions, l, on opposite sides and near one end, which t respectively into the bearings in the ears, h. 8o` This handle has a central slot extending 1011- gitudinally from the end on which the trunnions, Z, are located; this slot is of a' width sufficient to accommodate the slotted lug, d. The said slot forms two parallel arms, lo, of the handle, D, and a round cross-pin, m, eX- tends between the arms, k, and is of such a size as to slide easily in the slot of the slotted lug, d. The trunnions, l, and the cross-pin, m, extend in a parallel direction a short distance 9o apart for a purpose to be presently indicated.

The operation of the device is as follows:- The parts, A, and,A, ofthe liask are shifted away from or toward each other by means of the handle, D, which may be swung on its trunnions in the bearings in the ears, h, While the cross-pin, m, will move, yfrom its normal position on one side of the trunnions to a position an equal distance on the opposite side thereof, but the ask-part, A', will move with roo the cross-pin, m, because the lug, d, in which said cross-pin slides is fixed to said part, A.

Hence the part, A,'will move with and to the same extent as the said cross-pin, or, in other Words, the parts, A, and, A', will have a total movement toward and away from each other equal to twice the distance between the centers of the trunnions and the cross-pin. At one position of the handle, D, the ends of the side arms abut against the ends of the setscrews, j. At the other position, they are apart a distance equal to the total movement of the parts, A,and, A'. The handles, D, with the cross-pins and'trunnions, operate as cams. Thus they may be termed cam-handles, and the fastenings generally may be termed camfastenings. The separable diametrically-opposite corners of the flask are each provided with one of these clamps and it will be seen that by operating them simultaneously the flask will be spread and contracted while the sides remain parallel. Each half of the flask has the corner-fastenings, and the handles of the same have ends, D', curved toward each other so that both may be taken in one hand and operated together. The movement is very simple and the parts are not likely to get out of order, and the flasks may be very expeditiously handled with this improved construction.

It is evident that our invention might be embodied in different form from what is here shown.

Having thus described our invention, what is claimed as new, and desired to be secured by Letters Patent, is-

l. In a molders flask, the combination of two parts forming the sides of said flask and having abutting ends; and cam-fastenings connecting said abutting ends and operative to spread the flask in the manner described.

2. In a molders flask, the combination of two parts forming the sides of the said flask and having abuttingr ends; sliding plates fastened to the two parts of the flask at said abutting ends; and cams connecting said plates and movable to spread the flask in the man ner described.

3. In a molders flask, the combination of two parts forming the sides of the flask and having abutting ends; and fastenings connecting said abutting ends and each c0mprising a plate having a central slot, and bearings on opposite sides of said slot, a plate having a slotted bearing occupying the slot in the first-named plate, and a cam-handle piece having trunnions engaging the bear ings of the said first-named plate and a crank-pin engaging the slotted-bearing of the other plate, substantially as described.

4. In a molders flask, the combination of two parts forming the sides of the flask and having abutting ends; and fastenings connecting said abutting ends and each comprising a plate having a central slot, bearings on opposite vsides of said slot and transverse stop-ears; a plate having a slotted bearing occupying the slot of the first-named plate and having side-arms with ends which confront the stop-ears on the said first-named plate; adjustment screws extending through the said stop-ears; and a cam-handle-pieee connecting the two plates by engagement with the bearings thereof.

In testimony whereof We affix oursignatures in the presence of two witnesses.

HERMAN R. TRAVERS. CHRISTIAN PETERSEN.

\Vitnesses:

JNO. T. MADDOX, F. PARKER DAVIS. 

